import sequtils,strutils
var
    N = stdin.readline.parseInt
    member : array[10001, seq[int]]
    M : int
    Cnt : array[1001, int]
    x, y : int
    maxM : int
for n in 0..<N:
    member[n] = stdin.readline.split.map(parseInt)

M = stdin.readline.parseInt
for m in 0..<M:
    (x, y) = stdin.readline.split.map(parseInt)
    var
        cnt = 0
    for n in 0..<N:
        if x <= member[n][0] and y >= member[n][1]:
            cnt += 1
    maxM = max(cnt, maxM)
    Cnt[m] = cnt
if maxM == 0:
    echo 0
else:
    for m in 0..<M:
        if Cnt[m] == maxM:
            echo m + 1